如何解决如何从Python与AutoCAD交互?
(defun graph ( pts sls tls )
( (lambda ( l )
(foreach x l (text (cdr x) (itoa (car x)) 0.0 1))
(mapcar
'(lambda ( a b / p q r )
(setq p (cdr (assoc a l))
q (cdr (assoc b l))
r (angle p q)
)
(entmake (list '(0 . "LINE") (cons 10 p) (cons 11 q) '(62 . 8)))
(text
(mapcar '(lambda ( x y ) (/ (+ x y) 2.0)) p q)
(rtos (distance p q) 2)
(if (and (< (* pi 0.5) r) (<= r (* pi 1.5))) (+ r pi) r)
2
)
)
sls tls
)
)
(mapcar 'cons (vl-sort (append sls tls) '<) pts)
)
)
(defun text ( p s a c )
(entmake
(list
'(0 . "TEXT")
(cons 10 p)
(cons 11 p)
(cons 50 a)
(cons 01 s)
(cons 62 c)
'(40 . 2)
'(72 . 1)
'(73 . 2)
)
)
)
输入为
(graph
'((75 25) (115 45) (90 60) (10 5) (45 0) (45 55) (0 25))
'(1 1 1 1 2 2 3 4 4 5 6)
'(2 3 4 5 3 6 6 5 7 7 7)
)
从上面创建的2D几何图形从AutoCAD导出为dxf文件。
实际输入是用Python生成的
pts = [(75,25),(115,45),(90,60),(10,5),(45,0),55),(0,25)]
sls = [1 1 1 1 2 2 3 4 4 5 6]
tls = [2 3 4 5 3 6 6 5 7 7 7]
我想知道如何使用python数据类型作为输入并直接从Python与AutoCAD交互,将AutoCAD输出保存为dxf文件。
编辑: 我已经在Python中安装了pyautocad,并且做到了
from pyautocad import Autocad,APoint
现在,我不确定如何在Python中评估这些AutoCAD表达式。 例如,输入是Python元组
p = APoint(x,y)
在生成输入数据作为autocad点之后,我不确定如何从此处继续。我不清楚函数中的命令如何
defun graph ( pts sls tls )
任何建议都将非常有用
解决方法
可以使用python的子进程库建立接口
"""
Created by Natasha 28/9/2020
-This code passes inputs from python to autocad
ref: https://stackoverflow.com/questions/48794935/batch-run-autolisp-with-python
ref: https://forums.autodesk.com/t5/visual-lisp-autolisp-and-general/how-to-interface-with-autocad-from-python/m-p/9768816/highlight/false#M404952
"""
import subprocess
from settings import\
GRAPH_LISP_FILE,\ # file paths
GRAPH_SCR_FILE,\
GRAPH_DWG_FILE,\
GRAPH_DXF_FILE
def write_src(graph):
"""
Commands sent to AutoCAD aew
:param graph:
:return:
"""
with open(GRAPH_SCR_FILE,'w') as outfile:
outfile.write("open\n" +
f"{GRAPH_DWG_FILE}" + "\n"
"(setq *LOAD_SECURITY_STATE* (getvar 'SECURELOAD))\n" +
'(setvar "SECURELOAD" 0)\n' +
rf'(load "{GRAPH_LISP_FILE}")' + "\n"
f"{graph}\n" +
'(setvar "SECURELOAD" *LOAD_SECURITY_STATE*)\n'
"saveas dxf 16\n" +
rf"{GRAPH_DXF_FILE}" +"\n"+
"quit"
)
pass
def iter_to_lisp_string(list_or_tuple):
"""
Converts python datatypeS list and tuple to AutoCAD datatype
:param list_or_tuple:
:return:
"""
return "(" + " ".join(map(str,list_or_tuple)) + ")"
if __name__ == '__main__':
pts_string = "'" + iter_to_lisp_string(map(iter_to_lisp_string,[(75,25),(115,45),(90,60),(10,5),(45,0),55),(0,25)]))
sls_string = "'" + iter_to_lisp_string([1,1,2,3,4,5,6])
tls_string = "'" + iter_to_lisp_string([2,6,7,7])
graph_command_string = iter_to_lisp_string(["graph",pts_string,sls_string,tls_string])
write_src(graph=graph_command_string)
subprocess.run(["C:\\Program Files\\Autodesk\\AutoCAD 2019\\acad.exe","/b",GRAPH_SCR_FILE])
print("Process Finished")
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